40% off Banana Republic Today Only Posted on June 19, 2010 by Corrinne 1 Day only! Get 40% off Reg priced product when you use your Luxe, BR, Gap or Old Navy credit card at BananaRepublic.com. Enter PRESALE40*at checkout. Starts 6/19/2010 at 12:01 AM ET and ends 11:59 PM ET 6/19/2010.